Headlight



1,575,327 F. s. GARFORD Er AL March 2 1926.

- HEADLIGHT Patented Mar. `2, 1926. A

UNITED STATES FRANCIS SYDNEY GARFORD AND JOI-IN WESLEY CAUDWELL, 0FIJOGEED, ALBERTA,

1,575,321 PATENT" oFFlcE.

CANADA.

HEADLIGHT.

Application illed May 2,

To all whom t may concern.'

Be it known that we, FRANCIS SYDNEY GAnFoRD and JOHN WESLEY CAUDWELL,both subjects of the King of Great Britain, and both residing inLougheed, in the Province of Alberta, Canada, have invented certain newand useful Improvements in Head-` lights, of which the following is aspecification.4

Our invention relates to improvements in the art of illumination, andalthough we have specifically termed our invention as improvements inheadlights, this is merely for illustrative purposes and must not beconstrued as limiting the application of the principle of our inventionto any particular field. Obviously our invention can be used to locatelanding aviation fields at night time, and in various other locations,such as headlights on locomotives, and for the illumination of areaswhere heavy traffic occurs at night time, whether on water or on land.

The principal object of the invention is to supersede the method nowcommon of lighting any given area, or flashing al signal, by means oflight rays reflected from bright or highly polished surfaces directlyinto the line of vision, by light rays reflected from any suitablenon-glazed, polished, or otherwise mirror-like surface, and without theuse of didusing lenses. Another object of our invention, particularly inits application to the headlights of automobiles,` is to faintlyilluminate the portion of the car directly behind the headlights, andthereby assist the vision of the occupants of an approaching automobile,and in the following specification we shall describe several disclosureswithin our invention, and what we claim as new will be set forth in theclaim forming part of this specification.- 4

Fig. 1 is a vertical central longitudinal section through our preferredform of light projector. Fig. 2 is a vertical central longitudinalsection through a modified form of -our light projector: in this casethe reflector is not apertured, and it is protected by a metal housing.The source of light is located within the light projector. Fig. 3 is aview similar to Fig. 2, except that the metal housing is centrallyapertured, and is provided with a wire screen to cover said aperture, aswell as a cupola which the reflector is provided with in thisdisclosure. Fig. 4 is a vertical central longitudinal sec- 1924. seriaINo. 710,512.

tion through a further modification showing a metal reflector in theform of a frustum, the smaller end of which is apertured and closed byaconical-shaped translucent member.v F ig.'5 is a View similar to Fig. 4with the addition of a metal housing 9 for the reflector, and Fig. 6 isa vertical longitudinal section through a still further form of ourlight projector showing the same adapted particularly for over-headlighting. l

In the drawings, like characters of reference refer to the same parts.

Several distinct advantages flow from ou invention, and one of these isthat since the .light rays are not reflected from a surface character ofthe reflector used is, such that the co-action therewith of the sourceof light used, and the reflector in front of said source of light, ofsuitable size, is such that the illuminated surface of said suitablereflector will not be capable of reflecting light rays in` such manneras to impair human vision.

`A is any suitable metal reflector the inner surface B of which is fiatwhite or its equivalent. This metal reflector is associated at its outeredge with a frame C, which frame supports a transparent closure memberD. This closure member may be made of glass or crystal, or of celluloid,or any equivalent material. The central portion of the reflector A isprovided with an opening E, and lclosing this opening is a translucentmember F, suitably associated with the metal reflector. The rays oflight pass through the translucent member F, and where this embodimentof our invention is used as a headlight for an automobile, this faintilluminaltion will assist the vision of the occupants versely of themouth of the various forms of relectors, thus supportingthe lamps so asto utilize a much greater area of the refleeting surface of thereflector.

Located to intercept thelight rays from the lamp H forwardly2 -is a.reflector. This reflector may be assoclated with the lamp 2, spacedapart therefrom. The transparentv closure member D houses the lamp andits bracket and reflector J within the reflector A. It will be observedthat the lamp bracket I passes through the housing 2 and reilector A.The reflector A may have a flat white reilectingsurface, or it may be yof flat white translucent material.

- In the yembodiment shown in Fig. 3 we have speciiically the samecombination as shown in Fig. 2 except that the metal housing '3 iscentrally apertured as shown at E', and over this aperture is placed ahousing in the form of a wire screen 4.' By means of the spacing device5 carried by said wire -Screen,'this screen is spaced apart from thecupola 6 of the translucent White reflector A. The lamp and its smallreflector are located directly'in front of the cupola 6.

In Figs. 4 and 5 we shovsrv metal reflectors 7 in the forni of afrustum, and the reflecting surface of these reflectors is .at white orits equivalent. The rear end of each reflector 7 is closed by aconical-shaped translucent member 8, which diffuses rays of lightpassing therethrough. A y

vT he form shown in Fig.` 5 is provided with a metal housing 9.

In Fig. 6 we s how an embodiment of our invention for over-headlighting. '.A is a translucent white reflector carried by any suitableframe l()` adapted to be coupled to a support. The mouth of thlsreflector is not closed, and the lamp is located in the correct positionby an extension 1'1 of the frame 10.

It must of course be understood that the lamps when substantiallypositioned as disclosed in the drawings will be properly focused.

The reflector J or its equivalent is lso lof cated in respect of itsassociated lamp I-I that it is impossible to see the filament of thelamp from any angle.

What we claim is: y

In combination a metal reflector centrally provided at its inner endwith an opening; a transparent closure member at the forward end ofsaid'relector provided centrally with an opening therethrough; anelectric lamp located in -front of said last-mentioned central opening;a bracket for said lam extending transversely of the mouth o saidreflector, an invertedreilector supported by said bracket and in 'frontof saidv electric lamp, and a translucentmember associated with theopening in the back of said metal reflector.

FRANCISSYDNEY GARFORD.: y. -JOHN WESLEY CAUDWELL;

